Pine warblers breed in Kentucky and begin to return to the area in early February. As the name implies, pine warblers spend most of their time in pine trees, where they build nests hidden in pine needles near the tops of these trees. They’ll typically lay 3 to 5 eggs in a cup-shaped nest space that is about the size of a golf ball. Pine warblers eat mostly insects, but will also eat pine seeds and berries from vines and bushes. Unlike most other warblers, pine warblers may visit birdfeeders to eat seeds or suet.